Semi-automatic bailer plug



FIG. 1 is a top front perspective view of a semi-automatic bailer plug,showing our new design;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right end elevational view thereof;

FIG. 4 is a left end elevational view thereof;

FIG. 5 is a top plan view thereof;

FIG. 6 is a rear elevational view thereof;

FIG. 7 is a bottom plan view thereof.

The ornamental design for a semi-automatic bailer plug, as shown anddescribed.